Earlier today, after months without meditating, i had an intuition to meditate and i just sat and did for like 1h easily and during the meditation i had lots of strange things happening, mostly i felt lots of energies throughout my body and  even more in my head where the spine meets the skull ( remember a lot when i practiced kriya yoga) i had a hard time to "wake up". 
A few hours later i decided to watch the part 1 of the "samadhi" movie just because i saw the part 2 in the suggestions on YouTube, things were just clicking like never before, i feel deep sadness during the movie and at some point, the narrator said something like: "you have to give up everything in order to be free" and i just felt my body relax instantly and a fucking huge energy started throughout all my body, i think i freak out and it stopped. A few moments later i tried to replicate the feeling and i was able to do it although not as powerful, i tried to surrender (this was the problem, "i" was trying) a success a little but it faded soon after but y body was vibrating like hell, my head was buzzing, my heart raced and i continued to go deeper. I noticed that i was unconsciously moving a huge amount of energy from the bottom of my spine to my head and i was successful every time, it was like an energy punch in my skull. Now i remember that i had a couple of those experiences as a child, a couple more as a teenager and a couple as an adult after pursuing enlightenment seriously. 
What the hell was that guys? This is dangerous to do? When i studied kriya yoga, usually it isn't recommended to move energy like that without some preparation steps and i am going through some kundalini crises for some time now but i am going deeper and deeper into enlightenment and away from egos achievements although i try to fight it a lot (i need to earn money). it seems like i don't have much control, something is guiding me like a video game,
Someone had some experience with this? I am kind of excited and scared at the same time, this was powerful.